| anestrus | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrum, anoestrum, anoestrus |
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| anoestrus | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrum, anestrus, anoestrum |
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| citrus | (noun) any of numerous fruits of the genus Citrus having thick rind and juicy pulp; grown in warm regions | Synonyms: citrous fruit, citrus fruit |
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| (noun) any of numerous tropical usually thorny evergreen trees of the genus Citrus having leathery evergreen leaves and widely cultivated for their juicy edible fruits having leathery aromatic rinds | Synonyms: citrus tree |
| diestrus | (noun) (of animals having several estrous cycles in one breeding season) a state or interval of sexual inactivity or quiescence between periods of activity | Synonyms: diestrum |
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| estrus | (noun) applies to nonhuman mammals: a state or period of heightened sexual arousal and activity | Synonyms: heat, oestrus, rut |
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| oestrus | (noun) applies to nonhuman mammals: a state or period of heightened sexual arousal and activity | Synonyms: estrus, heat, rut |
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